CVE-2009-0040

MEDIUMCVSS v2 · 6.86.8
EchelonGraph scoreLOW confidence

“—” beside the score: it is equal to NVD's CVSS v2 base score.

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 6.8 — NVD rates that MEDIUM (NVD's v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; no CRITICAL band). Vector AV:N/AC:M/Au:N/C:P/I:P/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 4.8% exploitation probability in the next 30 days; it does not lift the v2 base. EPSS sets EG Risk's exploitation input. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: NVD CVSS v2.0
6.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 4.8%CVSS v2: 6.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The PNG reference library (aka libpng) before 1.0.43, and 1.2.x before 1.2.35, as used in pngcrush and other applications, allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file that triggers a free of an uninitialized pointer in (1) the png_read_png function, (2) pCAL chunk handling, or (3) setup of 16-bit gamma tables.

CVSS v2.0 (legacy)
6.8MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
6.8MEDIUMlow confidence
EG Risk
33
EG Risk 33/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity68% × 45%
The EG Score, 6.8 of 10.
Exploitation4.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
4.8%
EPSS %ILE
91st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

February 22, 2009

Last Modified

April 23, 2026

References (82)

15 of 82 shown · show the other 67

Patch Availability(6)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuxulrunner-1.9 (1.9.0.7+nobinonly-0ubuntu0.8.10.1) @ intrepid2026-05-30ubuntu
ubuntulibpng12-0 (1.2.15~beta5-3ubuntu0.1) @ hardy2026-05-30ubuntu
redhatseamonkey-0:1.0.9-38.el42009-03-05redhat
redhatxulrunner-0:1.9.0.7-1.el52009-03-05redhat
redhatlibpng-2:1.2.10-7.1.el5_3.22009-03-04redhat
redhatlibpng10-0:1.0.13-202009-03-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 2 ecosystems)
Debian:5.0(2)
PackageVulnerable rangeFix by version rangeDependents
icedove2.0.0.19-1, 2.0.0.19-1+kbsd
  • every version up to 2.0.0.22-0lenny1: fixed in 2.0.0.22-0lenny1
—
libpng1.2.27-2
  • every version up to 1.2.27-2+lenny2: fixed in 1.2.27-2+lenny2
—
Debian:4.0(1)
PackageVulnerable rangeFix by version rangeDependents
libpng1.2.15~beta5-1
  • every version up to 1.2.15~beta5-1+etch2: fixed in 1.2.15~beta5-1+etch2
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× in last 7d / 16× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 79 of 109 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 21 repeat rows among the latest 100 are merged into the row they repeat. The 30 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 01:55 UTCEG score recompute
  2. 2026-10-11 13:38 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  3. 2026-10-10 19:54 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  4. 2026-10-09 20:00 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  5. 2026-10-08 16:33 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  6. 2026-10-07 23:37 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  7. 2026-10-06 15:09 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  8. 2026-10-05 17:37 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  9. 2026-09-30 14:58 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  10. 2026-09-29 07:56 UTCEG score recompute
  11. 2026-09-27 13:39 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  12. 2026-09-26 15:52 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  13. 2026-09-24 13:57 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  14. 2026-09-17 19:20 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  15. 2026-09-15 03:04 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  16. 2026-09-12 14:54 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  17. 2026-09-10 09:24 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  18. 2026-09-06 13:41 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  19. 2026-09-05 15:22 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  20. 2026-09-04 13:55 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  21. 2026-08-28 21:34 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  22. 2026-08-27 14:19 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  23. 2026-08-25 13:43 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  24. 2026-08-19 16:58 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  25. 2026-08-15 01:24 UTCEPSS rescoreEPSS 4.8% · 91st percentile
Show 54 more
  1. 2026-08-09 13:41 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  2. 2026-08-08 16:31 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  3. 2026-08-06 13:41 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  4. 2026-08-03 10:28 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  5. 2026-07-30 16:22 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  6. 2026-07-30 01:26 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  7. 2026-07-26 13:37 UTCEG score recomputeFirst assessed: 6.8 MEDIUM
  8. 2026-07-25 14:12 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  9. 2026-07-24 14:12 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  10. 2026-07-23 14:14 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  11. 2026-07-23 00:58 UTCEG score recompute
  12. 2026-07-23 00:36 UTCEG score recompute
  13. 2026-07-23 00:03 UTCEG score recompute
  14. 2026-07-22 21:42 UTCEG score recompute
  15. 2026-07-22 14:03 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  16. 2026-07-21 15:20 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  17. 2026-07-20 17:03 UTCEPSS rescoreEPSS 4.8% · 91st percentile
  18. 2026-07-18 09:59 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  19. 2026-07-16 16:58 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  20. 2026-07-15 16:54 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  21. 2026-07-15 01:55 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  22. 2026-07-13 22:25 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  23. 2026-07-13 06:07 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  24. 2026-07-11 08:22 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  25. 2026-07-09 19:04 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  26. 2026-07-08 15:10 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  27. 2026-07-06 16:23 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  28. 2026-07-06 02:19 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  29. 2026-07-05 02:26 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  30. 2026-07-04 06:27 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  31. 2026-07-01 15:02 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  32. 2026-06-30 23:19 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  33. 2026-06-29 14:02 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  34. 2026-06-28 14:03 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  35. 2026-06-28 04:52 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  36. 2026-06-27 03:05 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  37. 2026-06-25 13:46 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  38. 2026-06-24 14:02 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  39. 2026-06-23 21:29 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  40. 2026-06-21 14:53 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  41. 2026-06-21 01:56 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  42. 2026-06-19 19:22 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  43. 2026-06-18 17:49 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  44. 2026-06-17 17:49 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  45. 2026-06-16 17:49 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  46. 2026-06-15 17:44 UTCEPSS rescoreEPSS 4.8% · 90th percentile
  47. 2026-06-14 23:14 UTCEPSS rescoreEPSS 6.9% · 91st percentile
  48. 2026-06-13 22:57 UTCEPSS rescoreEPSS 6.9% · 91st percentile
  49. 2026-06-12 23:08 UTCEPSS rescoreEPSS 8.3% · 92nd percentile
  50. 2026-06-10 22:14 UTCEPSS rescoreEPSS 8.3% · 92nd percentile
  51. 2026-06-10 13:17 UTCEPSS rescoreEPSS 8.3% · 92nd percentile
  52. 2026-06-07 15:22 UTCEPSS rescoreEPSS 8.3% · 92nd percentile
  53. 2026-06-06 13:44 UTCEPSS rescoreEPSS 8.3% · 92nd percentile
  54. 2026-06-05 22:44 UTCEPSS rescoreEPSS 8.3% · 92nd percentile

Related CVEs(same product + same vendor + same CWE)

Frequently asked(4)

What is CVE-2009-0040?
CVE-2009-0040 is a medium-severity vulnerability; its CVE record was published on February 22, 2009. The PNG reference library (aka libpng) before 1.0.43, and 1.2.x before 1.2.35, as used in pngcrush and other applications, allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PNG file that triggers a free of an…
When was CVE-2009-0040 made public?
CVE-2009-0040 was made public on February 19, 2009: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on February 22, 2009. EchelonGraph's copy of the record carries a last-modified date of April 23, 2026; the record at its source may have been updated since.
Is CVE-2009-0040 actively exploited?
CVE-2009-0040 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.8% probability of exploitation in the next 30 days (91st percentile of EPSS-scored CVEs).
How do I remediate CVE-2009-0040?
A fix for CVE-2009-0040 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2009-0040

Explore →

Is Your Infrastructure Affected by CVE-2009-0040?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs